One of the key factors to consider in the design of solar greenhouse is natural ventilation

According to the ventilation principle, natural ventilation can be divided into two forms: air pressure ventilation and hot pressure ventilation.

The necessary conditions for natural ventilation include three main factors: outdoor wind speed, indoor and outdoor temperature difference and greenhouse vents.

1. Wind speed affects the ability of air pressure ventilation;

2. Temperature difference affects the intensity of hot pressure ventilation;

3. The air vent is the basic condition of the two kinds of ventilation;

The reasonableness of air vent directly affects the ability and effect of natural ventilation in greenhouse. 

It is also a part of the design that can be controlled by human beings.